Komagatake-c2 Tephra

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Komagatake-c2 Tephra

Abbr.: Ko-c2

Synonym: Komagatake-c2 Tuff Bed

Type locality: Mount Komagatake, Hokkaido
Tephra
Holocene (1694 AD, ¹⁴C; August 24th - 26th, 1694)

Lithofacies: Pumice fall deposit, Pyroclastic flow deposit (2 fall units)
Lithofacies (Upper): Pumice
Lithofacies (Lower): Scoria

Source: Mount Komagatake, Hokkaido
Mode of eruption: Plinian associated with pyroclastic flow deposit
Eruptive volume (Pumice): 0.1 km³ DRE
Eruptive volume (Pyroclastic flow): 0.1 km³ DRE
Thickness: 200 m

Stage IV
[ Upper ]
~~~~~~~~~~~~~~
1942
~~~~~~~~~~~~~~
Ko-a
~~~~~~~~~~~~~~
Ko-c1
~~~~~~~~~~~~~~
Ko-c2
~~~~~~~~~~~~~~
Ko-d
~~~~~~~~~~~~~~
Kurumizaka Debris Avalanche Deposit
~~~~~~~~~~~~~~
[ Lower ]

Komagatake volcano
[ Upper ]
+--+--+--+--+-
Stage IV
~~~~~~~~~~~~~~
Stage III
~~~~~~~~~~~~~~
Stage II
~~~~~~~~~~~~~~
Stage I
~~~~~~~~~~~~~~
[ Lower ]

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Mount Komagatake, Hokkaido; Mount Taisetsu, Hokkaido
Distribution: Shirinashi river, Shikabe city, Kayabe county, Hokkaido; Cape Dekima, Shikabe city, Kayabe county, Hokkaido

Ishige et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.4, pp.297-310 DOI
Yoshimoto et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.7, pp.336-347 DOI
Yoshimoto et al. (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.81-92 DOI